There's a Star Trek episode running through my memory cells. Kirk et al beam down to a planet and find a fascist state in charge. However, the leader died some time ago, and his handlers feared a rebellion if the public knew about that death. So they pull the dead leader out of the freezer and prop him up in front of the TV camera. The mike is positioned such that no one can see if the lips are moving or not. A handler impersonates the leader's voice.

ChatGPT could be a "Big Brother" in the future.